Cheap flights from Chicago to Las Vegas from $86 MDW, ORD, RFD → LAS

Found recently, and the cheapest we hold

What have prices looked like?

Over 49 days, 24 Sept to 11 Nov, the cheapest return we saw each day was $116 to $197.

Those were the prices on those days, not today's.

Could nearby dates be cheaper?

Yes. Among 1-night return fares leaving within 3 days of 5 Dec, 2 Dec – 3 Dec costs $170: $14 less than the cheapest found recently.

Frontier Airlines · O'Hare International Airport (ORD) → McCarran International Airport (LAS) · out nonstop, back nonstop · found 3 days ago

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Every date we hold

368 fares on 23 departure dates

Which month looks cheapest?

December 2026 is the cheapest month — from $170.

Found recently, and the cheapest we hold

It is also the cheapest one-way we hold, of any age.

What have prices looked like?

Over 49 days, 24 Sept to 11 Nov, the cheapest one-way we saw each day was $60 to $92.

Those were the prices on those days, not today's.

Could nearby dates be cheaper?

No. We hold one-way fares on 1 other departure date within 3 days of 24 Nov, and it is not cheaper.

Every date we hold

152 fares on 19 departure dates

Which month looks cheapest?

November 2026 is the cheapest month — from $86.

Return

Fares 14 to 29 days before departure were typically 45% lower than 0 to 6 days before departure.

From the cheapest return each day between 24 Sept and 11 Nov (49 days), grouped by how many days ahead the flight left; one adult in economy.

Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.

Prices reflect recent searches — current fares may differ.

One-way

Fares 14 to 29 days before departure were typically 39% lower than 0 to 6 days before departure.

From the cheapest one-way each day between 24 Sept and 11 Nov (49 days), grouped by how many days ahead the flight left; one adult in economy.

Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.

Prices reflect recent searches — current fares may differ.

How much is a return flight from Chicago to Las Vegas?

The cheapest return found recently is $184 with Frontier Airlines, 5 Dec to 6 Dec, found 2 days ago. The cheapest return we hold, of any age, is $170 with Frontier Airlines, 2 Dec to 3 Dec, found 3 days ago. The cheapest return fare on each of 23 departure dates is usually $239 to $328.

How much is a one-way flight from Chicago to Las Vegas?

The cheapest one-way found recently is $86 with Allegiant Air, 24 Nov, found 2 days ago. The cheapest one-way fare on each of 19 departure dates is usually $102 to $183.

What is the cheapest month to fly from Chicago to Las Vegas?

December 2026 is the cheapest month for a return, from $170, 2 Dec to 3 Dec, found 3 days ago. November 2026 is the cheapest month for a one-way, from $86, 24 Nov, found 2 days ago.

Every date in December 2026

Every date in November 2026

How far ahead should I book a flight from Chicago to Las Vegas?

In 49 days of prices between 24 Sept and 11 Nov, return fares 14 to 29 days before departure were typically 45% lower than 0 to 6 days before departure. One-way fares 14 to 29 days before departure were typically 39% lower than 0 to 6 days before departure.

Is there a direct flight from Chicago to Las Vegas?

Yes, the cheapest nonstop return found recently is $249 with American Airlines, 1 Dec to 8 Dec, found yesterday. The cheapest nonstop one-way found recently is $86 with Allegiant Air, 24 Nov, found 2 days ago.

Every nonstop date from Chicago to Las Vegas

How long is the flight from Chicago to Las Vegas?

The cheapest nonstop one-way found recently, with Allegiant Air on 24 Nov, takes 3 h 46 min from Chicago Rockford International Airport (RFD) to McCarran International Airport (LAS).

Which airlines have the cheapest flights from Chicago to Las Vegas?

Between 14 Nov and 21 Mar 2027, Frontier Airlines has the cheapest return on 17 of the 23 departure dates we hold, Allegiant Air on 3 and Southwest Airlines on 2. Between 22 Nov and 11 May 2027, Allegiant Air has the cheapest one-way on 8 of the 19 departure dates we hold, Frontier Airlines on 8 and American Airlines on 1.